title: The prevalence and possible causes of fat-soluble vitamin deficiencies in the world.
mesh_terms: D002648:Child; D002675:Child, Preschool; D003466:Cultural Characteristics; D014943:Global Health; D006801:Humans; D011502:Protein-Energy Malnutrition / Q000150:complications; D013472:Sunlight; D014802:Vitamin A Deficiency / Q000453:epidemiology* / Q000209:etiology; D014808:Vitamin D Deficiency / Q000453:epidemiology* / Q000209:etiology; D014811:Vitamin E Deficiency / Q000453:epidemiology* / Q000209:etiology; D014813:Vitamin K Deficiency / Q000453:epidemiology / Q000209:etiology